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Titolo:
TRACING THE TOPOLOGY OF THE OCTOBER 18-20, 1995, MAGNETIC CLOUD WITH SIMILAR-TO-0.1-10(2)-KEV ELECTRONS
Autore:
LARSON DE; LIN RP; MCTIERNAN JM; MCFADDEN JP; ERGUN RE; MCCARTHY M; REME H; SANDERSON TR; KAISER M; LEPPING RP; MAZUR J;
Indirizzi:
UNIV CALIF BERKELEY,SPACE SCI LAB BERKELEY CA 94720 UNIV CALIF BERKELEY,DEPT PHYS BERKELEY CA 94720 UNIV WASHINGTON,GEOPHYS PROGRAM SEATTLE WA 98195 UNIV TOULOUSE 3,CTR ETUD SPATIALE RAYONNEMENTS F-31062 TOULOUSE FRANCE ESA,EUROPEAN SPACE RES & TECHNOL CTR,DEPT SPACE SCI F-75738 PARIS 15 FRANCE NASA,GODDARD SPACE FLIGHT CTR GREENBELT MD 20771 UNIV MARYLAND COLLEGE PK MD 20742
Titolo Testata:
Geophysical research letters
fascicolo: 15, volume: 24, anno: 1997,
pagine: 1911 - 1914
SICI:
0094-8276(1997)24:15<1911:TTTOTO>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
HEAT-FLUX DROPOUTS; SOLAR-WIND; SPACECRAFT; RECONNECTION; PLASMA; FIELDS; RADIO; AU;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
22
Recensione:
Indirizzi per estratti:
Citazione:
D.E. Larson et al., "TRACING THE TOPOLOGY OF THE OCTOBER 18-20, 1995, MAGNETIC CLOUD WITH SIMILAR-TO-0.1-10(2)-KEV ELECTRONS", Geophysical research letters, 24(15), 1997, pp. 1911-1914

Abstract

Five solar impulsive similar to 1-10(2) keV electron events were detected while the WIND spacecraft was inside the magnetic cloud observed upstream of the Earth on October 18 - 20, 1995. The solar type III radio bursts produced by these electrons can be directly traced from similar to 1 AU back to X-ray flares in solar active region AR 7912, implying that at least one leg of the cloud was magnetically connected to that region. Analysis of the electron arrival times shows that the lengths of magnetic field lines in that leg vary from similar to 3 AU nearthe cloud exterior to similar to 1.2 AU near the cloud center, consistent with a model force-free helical flux rope. Although the cloud magnetic field exhibits the smooth, continuous rotation signature of a helical flux rope, the similar to 0.1-1 keV heat flux electrons and similar to 1-10(2) keV energetic electrons show numerous simultaneous abrupt changes from bidirectional streaming to unidirectional streaming tocomplete flux dropouts. We interpret these as evidence for patchy disconnection of one end or both ends of cloud magnetic field lines from the Sun.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 15/07/20 alle ore 06:13:14